Beauty truth: Dry skin is the worst. What can make the flaky, red, glow-sapping problem even
worse, is that it’s not always easy to tell what’s causing it. Is the
fix as simple as reaching for your moisturizer, or do you have a deeper
dehydration issue? This new tech-enabled tool can help you figure it
out.

“Skin dryness and dehydration are often used interchangeably. They can coexist but mean two different things,” Sejal Shah, M.D. board-certified dermatologist in New York City tellsAllure.
“Dry skin typically refers to a lack of oil or lipids, whereas
dehydrated skin is due to lack of water.” In other words, if you haven’t
been getting your eight glasses of water a day, your skin might be
chronically suffering. In addition to dehydration in your bod, skin
dehydration can be caused by environmental issues like harsh skincare
products, too much sun, dry climates or even a hot shower, says Shah.